.btn () {
    display: block;
    text-align: center;
    overflow: hidden;
}
.hidden {
    display: none;
}

.btn-1 {
    .btn();
    background-color: #ff5113;    
    color: #fff;
    line-height: 26px;
    width: 81px;
}

.btn-2 {
    .btn();
    color: #ff5113;
    border: 1px solid #ff5113;
    line-height: 23px;
    height: 23px;
    width: 53px;
    padding-left: 26px;
}

.btn-3 {
    .btn();
    color: #fff;
    background-color: #9e9e9e;    
    line-height: 20px;
    width: 76px;
}

.btn1(@width, @height) {
    display: block;
    text-align: center;
    line-height: @height;
    width: @width;
    background-color: #ff5113;    
    color: #fff;
}

.btn2(@width, @height) {
    display: block;
    text-align: center;
    line-height: @height;
    width: @width;
    color: #9e9e9e;
    border: 1px solid #ccc;
}
